
Milliohm
A 3W power upgrade with matched electricals, but in a much larger 2512 package requiring board redesign.
Finding a substitute for the MLR06A1R005F2, a 1W 5mΩ resistor in a 0612 package, requires careful consideration. While several parts offer matching electricals and higher power, they come in larger packages, necessitating a board redesign.
No alternatives in the same 0612 package meet the power safety margin. A PCB respin is necessary.
Resistance, tolerance, and TCR are well-matched or improved in most candidates.
No direct pin-compatible replacements were found. All suitable alternatives require a PCB layout change due to different package sizes.
Upgrade to a higher power resistor (1.5W or 3W) for improved thermal performance, but be prepared for a larger package size requiring a board layout change.
Package risk: All candidates have larger footprints (e.g., 2010, 2512) than the target's 0612 package, requiring board redesign.

Milliohm
A 3W power upgrade with matched electricals, but in a much larger 2512 package requiring board redesign.
| Feature / factor | MLR06A1R005F2 | HoLR2512-5mR-1% | LR2512D-3W-5mR-1% | RLM20FEDR005 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0612 | 2512 | 2512 | 2010 | 2512 / 2010 — Candidate is significantly larger, requires PCB redesign.; LR2512D-3W-5mR-1%: Candidate is significantly larger, requires PCB redesign.; RLM20FEDR005: Candidate is significantly larger, requires PCB redesign.; ASR-K-3-5F: Candidate is significantly larger, requires PCB redesign. |
| Power | 1.0W | 3.0W | 3.0W | 1.5W | 3.0W / 1.5W — Significant power upgrade.; LR2512D-3W-5mR-1%: Significant power upgrade.; RLM20FEDR005: Meets 1.5x power rule for safety margin.; ASR-K-3-5F: Significant power upgrade. |
| Resistance | 5mΩ | 5mΩ | 5mΩ | 5mΩ | 5mΩ — matched; LR2512D-3W-5mR-1%: matched; RLM20FEDR005: matched; ASR-K-3-5F: matched |
| Tcr | ±50 ppm/°C | ±50 ppm/°C | ≤25-50ppm/°C | ±50ppm/℃ | ±50 ppm/°C / ≤25-50ppm/°C / ±50ppm/℃ / ±70ppm/℃ — matched; LR2512D-3W-5mR-1%: TCR is better than or equal to target.; RLM20FEDR005: matched; ASR-K-3-5F: Worse TCR may affect precision in some applications. |
| Tolerance | ±1% | - | - | ±1% | ±1% — matched |
The best alternatives are higher-power resistors like RLM20FEDR005 (1.5W) or LR2512D-3W-5mR-1% (3W), but they require a larger PCB footprint (2010 or 2512).